نتایج جستجو برای: low fouling

تعداد نتایج: 1204763  

2017
Amira Abdelrasoul Huu Doan Ali Lohi Chil-Hung Cheng

One of the major obstacles preventing a more widespread application of membrane technology is the fact that the filtration performance inevitably decreases with filtration time. The understanding of causes of flux decline and the ability of predicting the flux performance is crucial for more extensive membrane applications. Therefore, this review focused on the analysis of the interrelated dyna...

2017
Roberto Floris

The use of ceramic low pressure membranes for drinking water production has been increasing in the past decades. However, fouling during membrane operations is still a challenging topic that requires attention and investigation. During filtration of surface water, a major contribution to fouling is attributed to the presence of dissolved organic carbon(DOC) and its fractions which comprise biop...

2014
S Maruthamuthu M Eashwar S T Manickam S Ambalavanan G Venkatachari

As more and more structural materials are used in marine and offshore service, studies on the effects of fouling organisms on corrosion and cathodic protection phenomena have gained renewed importance. This communication describes the common fouling organisms of Tuticorin harbour and their possible association in corrosion processes. Earlier studies on fouling in Tuticorin waters are restricted...

2013
Huadong Yang

Fouling is an important performance degradation factor of axial flow compressor. Proper fouling sensitive parameter is crucial to more effectively monitor the fouling severity. Currently fouling level and cleaning necessity are judged by the decrease degree of thermodynamic performance parameter from macro point. But simulation research of NASA rotor 37 finds that tip clearance increase also ca...

2009
Jian-Jun Qin Boris Liberman Kiran A. Kekre

Reverse osmosis (RO) has been widely applied in various water and wastewater treatment processes as a promising membrane technology. However, RO membrane fouling is a global issue, which limits it operating flux, decreases water production, increases power consumption and requires periodical membranes Cleaning-in-Place (CIP) procedure. This may result in low effectiveness, high cost and adds en...

2016
S. J. Pugh G. F. Hewitt H. Müller-Steinhagen Geoff Hewitt Hans Müller-Steinhagen

IHS ESDU recently published its latest ‘User Guide’ to fouling in heat exchange systems, for systems with fresh water as the coolant. ESDU 07006 [1] is the third in a group, following the development of the Crude Oil Fouling User Guide [2] issued in 2000 and the Seawater Fouling User Guide [3] issued in 2004. ESDU 07006 was developed by IHS ESDU over a period of five years under the guidance of...

2014
Jan Tebben James R. Guest Tsai M. Sin Peter D. Steinberg Tilmann Harder

The early post-settlement stage is the most sensitive during the life history of reef building corals. However, few studies have examined the factors that influence coral mortality during this period. Here, the impact of fouling on the survival of newly settled coral spat of Acropora millepora was investigated by manipulating the extent of fouling cover on settlement tiles using non-toxic, wax ...

2014
Mehdi Pourabdollah Ayoob Torkian Seyed Jamalodin Hashemian Bita Bakhshi

One of the main factors affecting membrane fouling in MBRs is operational conditions. In this study the influence of aeration rate, filtration mode, and SRT on hollow fiber membrane fouling was investigated using a triple fouling layers perspective. The sludge microbial population distribution was also determined by PCR method. Through various applied operational scenarios the optimal condition...

2011
João Canning-Clode Paul Fofonoff Gerhardt F. Riedel Mark Torchin Gregory M. Ruiz

BACKGROUND The invasion of habitats by non-indigenous species (NIS) occurs at a global scale and can generate significant ecological, evolutionary, economic and social consequences. Estuarine and coastal ecosystems are particularly vulnerable to pollution from numerous sources due to years of human-induced degradation and shipping. Pollution is considered as a class of disturbance with anthropo...

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